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Red Hat Enterprise Linux 5 RHSA-2014:0016-01 Moderate: gnupg Acoustic Risk

red hat
Calendar Grey January 8, 2014
Dist Redhat Esm H88
Critical security patch for gnupg by Red Hat mitigates risks associated with linear cryptanalysis vulnerabilities. Essential for all users.
An updated gnupg package that fixes one security issue is now available for Red Hat Enterprise Linux 5

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

Summary

The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with the proposed OpenPGP Internet standard and the S/MIME standard.
It was found that GnuPG was vulnerable to side-channel attacks via acoustic cryptanalysis. An attacker in close range to a target system that is decrypting ciphertexts could possibly use this flaw to recover the RSA secret key from that system. (CVE-2013-4576)
Red Hat would like to thank Werner Koch of GnuPG upstream for reporting this issue. Upstream acknowledges Genkin, Shamir, and Tromer as the original reporters.
All gnupg users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory moderate security update red hat gnupg encryption acoustic cryptanalysis

References

https://access.redhat.com/security/cve/CVE-2013-4576 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: gnupg-1.4.5-18.el5_10.1.i386.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.i386.rpm
x86_64: gnupg-1.4.5-18.el5_10.1.x86_64.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: gnupg-1.4.5-18.el5_10.1.i386.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.i386.rpm
ia64: gnupg-1.4.5-18.el5_10.1.ia64.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.ia64.rpm
ppc: gnupg-1.4.5-18.el5_10.1.ppc.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.ppc.rpm
s390x: gnupg-1.4.5-18.el5_10.1.s390x.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.s390x.rpm
x86_64: gnupg-1.4.5-18.el5_10.1.x86_64.rpm gnupg-debuginfo-1.4.5-18.el5_10.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key#package


Advisory ID: RHSA-2014:0016-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:0016.html
Issue date: 2014-01-08

Topic

An updated gnupg package that fixes one security issue is now available forRed Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate security update red hat gnupg encryption acoustic cryptanalysis

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Bugs Fixed

1043327 - CVE-2013-4576 gnupg: RSA secret key recovery via acoustic cryptanalysis

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